Fallos del tipo CWE-476

2566 resultados

Desreferência de ponteiro nulo autenticada remota

A aplicação tenta acessar um objeto ou endereço de memória que não foi inicializado ou foi definido como nulo, sem verificar essa condição antes. Um atacante autenticado consegue provocar esse acesso inválido enviando dados malformados ou inesperados, causando crash ou comportamento indefinido.

Ejemplo

Um endpoint autenticado de API recebe um ID de usuário, faz uma busca no banco que retorna nulo (usuário não existe) e tenta acessar diretamente campos desse objeto nulo sem validação — resultando em erro 500 ou travamento da aplicação.

Cómo mitigar

Sempre verificar se um objeto é nulo antes de usá-lo; usar análise estática (linters, SAST) para detectar acessos potenciais a nulos; validar e tratar casos onde dados esperados podem estar ausentes, mesmo que o usuário esteja autenticado.

CVE-2022-2850MEDIUMA flaw was found In 389-ds-base. When the Content Synchronization plugin is enabled, an authenticated user can reach a NULL pointer derefereEPSS 1.6%CVE-2021-20213—A flaw was found in Privoxy in versions before 3.0.29. Dereference of a NULL-pointer that could result in a crash if accept-intercepted-requEPSS 1.6%CVE-2023-39351MEDIUMFreeRDP Null Pointer Dereference leading denial of serviceEPSS 1.6%CVE-2022-1674MEDIUMNULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 in vim/vimEPSS 1.6%CVE-2022-47015MEDIUMMariaDB Server before 10.3.34 thru 10.9.3 is vulnerable to Denial of Service. It is possible for function spider_db_mbase::print_warnings toEPSS 1.6%CVE-2022-3109HIGHAn issue was discovered in the FFmpeg package, where vp3_decode_frame in libavcodec/vp3.c lacks check of the return value of av_malloc() andEPSS 1.6%CVE-2011-1282HIGHThe Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, WindowEPSS 1.6%CVE-2025-53716MEDIUMWindows Local Security Authority Subsystem Service (LSASS) Denial of Service VulnerabilityEPSS 1.6%CVE-2023-6535MEDIUMKernel: null pointer dereference in nvmet_tcp_execute_requestEPSS 1.5%CVE-2023-6536MEDIUMKernel: null pointer dereference in __nvmet_req_completeEPSS 1.5%CVE-2026-20875HIGHWindows Local Security Authority Subsystem Service (LSASS) Denial of Service VulnerabilityEPSS 1.5%CVE-2017-2635HIGHA NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could uEPSS 1.5%CVE-2022-41999HIGHA denial of service vulnerability exists in the DDS native tile reading functionality of OpenImageIO Project OpenImageIO v2.3.19.0 and v2.4.EPSS 1.5%CVE-2024-7006HIGHLibtiff: null pointer dereference in tif_dirinfo.cEPSS 1.5%CVE-2022-0696MEDIUMNULL Pointer Dereference in vim/vimEPSS 1.5%CVE-2020-3407HIGHCisco IOS XE Software RESTCONF and NETCONF-YANG Access Control List Denial of Service VulnerabilityEPSS 1.5%CVE-2021-27630HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%CVE-2021-27631HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%CVE-2021-27607HIGHSAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.2EPSS 1.5%CVE-2021-27632HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%